[cfe-dev] clang --version question.

[Jean-Daniel Dupas]

Is this patch OK ?

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Le 16 juil. 09 à 05:56, Daniel Dunbar a écrit :

> Fine with me. However, the change should only be for --version, I
> think the reason it is currently to stderr is that is what happens in
> gcc when run as -v:
> --
> ddunbar at giles:tmp$ gcc --version > /dev/null
> ddunbar at giles:tmp$ gcc -v > /dev/null
> Using built-in specs.
> Target: i686-apple-darwin10
> Configured with: /var/tmp/gcc/gcc-5646~6/src/configure
> --disable-checking --enable-werror --prefix=/usr --mandir=/share/man
> --enable-languages=c,objc,c++,obj-c++
> --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/
> --with-slibdir=/usr/lib --build=i686-apple-darwin10
> --with-gxx-include-dir=/include/c++/4.2.1
> --program-prefix=i686-apple-darwin10- --host=x86_64-apple-darwin10
> --target=i686-apple-darwin10
> Thread model: posix
> gcc version 4.2.1 (Apple Inc. build 5646)
> --
>
> - Daniel
>
> On Wed, Jul 15, 2009 at 5:11 PM, Jean-Daniel
> Dupas<devlists at shadowlab.org> wrote:
>> Hello,
>>
>> Is there a reason why clang outputs its version in stderr instead  
>> of stdout
>> when passing the --version flag ?
>> It prevents usage of this kind of script (used to detect type of  
>> parser in
>> some projects):
>>
>> if $cc --version 2>/dev/null | grep -q clang; then …
>>
>> Note that this can be easily workaround by redirecting stderr in  
>> stdout
>> instead of /dev/null, but I wonder if it's not simpler to change  
>> the driver
>> to use stdout instead (see attached patch).
>>
>> Regards
>> Jean-Daniel
>>
>>
>>
>>
>>
>>
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>>
>